Holy crow, it's practically summer. And when you have kids that love the water as much as mine, that means finding a pool and figuring out fun things to do in it. Sometimes all kids need to be entertained is the pool itself, but every kid loves a good pool game.
If you're tired of playing, "Mommy, try to get away while I chase you," (which really means, "Mommy, do your best to haul yourself around this pool without getting any of this community bath water in your mouth, while I kick strangers in the stomach, splash old ladies in the face and run into babies who are in the pool for the first time.") then these alternatives should float your boat.